The contact owns a 2023 Ford Escape. The contact stated while driving 60 MPH, the Adaptive Cruise Control altered the speed after detecting the number on the Minnesota county road sign ending in the number 5. The Adaptive Cruise Control was changed without warning. The vehicle gradually accelerated after the failure. While driving at slow speeds, the speeds spontaneously increased from 30 MPH to 50 MPH. There were no warning lights illuminated. The contact called the local dealer, but the vehicle was not diagnosed or repaired. The manufacturer was contacted, who referred the contact to the NHTSA Hotline. The failure mileage was approximately 19,280.